沟灌

例句：

1. 1. We need to implement the irrigation system in our farm to ensure water supply for crops.
   我们需要在我们的农场实施灌溉系统，以确保农作物的水源供应。
2. 2. The farmer used to use a traditional method of irrigation, but now he switches to modern technology.
   这位农民过去使用传统的灌溉方法，但现在他转向了现代技术。
3. 3. In dry seasons, farmers often rely on irrigation to maintain their crops' health.
   在干旱季节，农民经常依靠灌溉来维护他们的作物健康。